dana chandler will have to stand trial for double homicide. >> she has a very complicated role in my life. because she is my mom, and she is my dad's killer. >> hawley's father, mike cisco, and his fiancee, karen harkness, were shot to death in 2002. from day one, h anch inaley and brother knew who did it. >> i know my mom did it. >> i don't want it to be her. >> reporter: her mother had stalked their father and karen for years. showing up unexpectedly at their homes, driving past family gatherings and calling incessantly. >> she would not let me off the phone. >> reporter: for nearly a decade, dana chandler walked free because there was no physical evidence linking her to the murders and she was living eight hours away in denver, colorado. in 2009, "48 hours" with our late colleague, harold dow, was the first to publicly name chandler as a suspect, and the case heated up. >> do you know anything about the death of michael and karen? >> i have no idea what happened to michael and karen. >> haley cisco started secretly recording her mother, hoping that dana would say something that sh